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| Unsigned |
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| A large number of instruments from the medieval and renaissance period are unsigned; the practice of adding a signature only became widespread towards the end of the period. In most cases, the exact reason why a maker chose not to sign the instrument is unknown, but several possibilities exist: the instrument may have been a collaborative piece produced in a workshop; the client may have requested that no signature be added; the instrument may be an inferior piece that the maker did not want to be directly identified with; the instrument may be an imitative piece in the style of a well-know maker but by another person; or a signature on the instrument may simply have been defaced or the part of the instrument on which it was engraved lost.
| For instruments by Unsigned, see: | |
Armillary Sphere, Unsigned, Italian, circa 1580 (Oxford, MHS) |
Armillary Sphere, Unsigned, Flemish, circa 1550 (Oxford, MHS) |
Armillary Sphere, Unsigned, Italian, circa 1500 (Oxford, MHS) |
Astrolabe, Unsigned, Hispano-Moorish, circa 1260 (Oxford, MHS) |
Astrolabe, Unsigned, Italian, circa 1500 ? (Oxford, MHS) |
Astrolabe, Unsigned, French, 13th century (Firenze, IMSS) |
Astrolabe, Unsigned, French, circa 1400 (Oxford, MHS) |
Astrolabe, Unsigned, English, circa 1300 (London, BM) |
Astrolabe, Unsigned, French, circa 1570 (Oxford, MHS) |
Astrolabe, Unsigned, Italian, Later 15th century ? (Oxford, MHS) |
Astrolabe, Unsigned, French, Dated 1595 (Oxford, MHS) |
Astrolabe, Unsigned, Flemish, Late 16th century (Oxford, MHS) |
Astrolabe, Unsigned, Hispano-Moorish, circa 1300 (Oxford, MHS) |
Astrolabe, Unsigned, English, circa 1350 (Oxford, MHS) |
Astrolabe, Unsigned, German, 16th century (Firenze, IMSS) |
Astrolabe, Unsigned, English, Late 14th century ? (London, BM) |
Astrolabe, Unsigned, Hispano-Moorish, circa 1260 (Oxford, MHS) |
Astrolabe, Unsigned, Spanish, Later 16th century (Firenze, IMSS) |
Astrolabe, Unsigned, German, 16th century (Firenze, IMSS) |
Astrolabe, Unsigned, Italian, circa 1500 (Oxford, MHS) |
Astrolabe, Unsigned, English, Later 14th century (Oxford, MHS) |
Astrolabe, Unsigned, English, Dated 1326 (London, BM) |
Astrolabe, Unsigned, French, circa 1400 (Oxford, MHS) |
Astrolabe, Unsigned, Italian, Dated 1568 (Firenze, IMSS) |
Astrolabe, Unsigned, origin unknown, circa 1400 (Oxford, MHS) |
Astrolabe, Unsigned, Hispano-Moorish, circa 1260 (Oxford, MHS) |
Astrolabe, Unsigned, English, circa 1600 ? (Oxford, MHS) |
Astrolabe, Unsigned, Sicily, 14th century (Oxford, MHS) |
Astrolabe, Unsigned, origin unknown, Early 16th century (Oxford, MHS) |
Astrolabe, Unsigned, German, 16th century (Firenze, IMSS) |
Astrolabe, Unsigned, English, circa 1320 (Oxford, MHS) |
Astrolabe, Unsigned, Spanish, 14th century ? (London, BM) |
Astrolabe, Unsigned, English, Later 16th century (Firenze, IMSS) |
Astrolabe, Unsigned, Spanish, Mid 14th century ? (London, BM) |
Astrolabe, Unsigned, English, circa 1370 (Oxford, MHS) |
Astrolabe, Unsigned, origin unknown, Late 14th century ? (Oxford, MHS) |
Astrolabe, Unsigned, French, Late 15th century ? (London, BM) |
Astrolabe, Unsigned, German, Dated 1521 ? (Oxford, MHS) |
Astrolabe, Unsigned, English, circa 1370 (Oxford, MHS) |
Astrolabe, Unsigned, French, circa 1450 (Oxford, MHS) |
Astrolabe, Unsigned, Italian, Late 15th century ? (London, BM) |
Astronomical Clock, Unsigned, German, circa 1575 (Firenze, IMSS) |
Astronomical Compendium, Unsigned, German, Later 16th century (Firenze, IMSS) |
Astronomical Compendium, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Astronomical Compendium, Unsigned, Italian, circa 1600 (London, BM) |
Astronomical Compendium, Unsigned, French, circa 1600 (Oxford, MHS) |
Astronomical Compendium, Unsigned, German, Late 16th century (Oxford, MHS) |
Astronomical Compendium, Unsigned, German, Later 16th century (Oxford, MHS) |
Astronomical Compendium, Unsigned, German, Late 16th century (Oxford, MHS) |
Astronomical Compendium, Unsigned, Florence, 16th century (Firenze, IMSS) |
Astronomical Compendium, Unsigned, German, Late 16th century (London, BM) |
Astronomical Compendium, Unsigned, German, Late 16th century (London, BM) |
Astronomical Compendium, Unsigned, German, Late 16th century ? (London, BM) |
Astronomical Compendium, Unsigned, German, 16th century (Firenze, IMSS) |
Astronomical Compendium, Unsigned, German, Late 16th century (Oxford, MHS) |
Astronomical Compendium, Unsigned, English, circa 1600 ? (London, BM) |
Astronomical Ring Dial, Unsigned, German, 16th century (Firenze, IMSS) |
Astronomical Ring Dial, Unsigned, Flemish, Late 16th century (London, BM) |
Astronomical Ring Dial, Unsigned, German, 16th century (Firenze, IMSS) |
Azimuth Dial, Unsigned, German, 16th century (Oxford, MHS) |
Azimuth Dial, Unsigned, English, circa 1600 (London, BM) |
Compass, Unsigned, Italian, Dated 1562 (Oxford, MHS) |
Compass, Unsigned, German, 16th century (Firenze, IMSS) |
Compass, Unsigned, English, 15th century ? (Oxford, MHS) |
Compasses, Unsigned, Italian, 16th century (Firenze, IMSS) |
Crucifix Dial, Unsigned, French, Dated 1592 (Oxford, MHS) |
Crucifix Dial, Unsigned, German, Late 16th century ? (London, BM) |
Crucifix Dial, Unsigned, Rome, Dated 1575 (Oxford, MHS) |
Diptych Dial, Unsigned, Spanish, circa 1600 ? (Oxford, MHS) |
Diptych Dial, Unsigned, Spanish, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, French, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, Late 15th century (London, BM) |
Diptych Dial, Unsigned, Nuremberg, circa 1480 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Italian, Dated 1589 (Oxford, MHS) |
Diptych Dial, Unsigned, French, Dated 1573 (Firenze, IMSS) |
Diptych Dial, Unsigned, Flemish, Dated 1595 (London, BM) |
Diptych Dial, Unsigned, Nuremberg, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, Dated 1543 (Oxford, MHS) |
Diptych Dial, Unsigned, Flemish, Dated 1586 (Oxford, MHS) |
Diptych Dial, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Italian, Dated 1596 (Oxford, MHS) |
Diptych Dial, Unsigned, English, circa 1600 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, Dated 1539 (Oxford, MHS) |
Diptych Dial, Unsigned, Nuremberg, Late 16th century ? (London, BM) |
Drawing Instruments, Unsigned, Milan, Early 16th century (Oxford, MHS) |
Equatorium, Unsigned, French, Late 15th century (Oxford, MHS) |
Equinoctial Dial, Unsigned, origin unknown, 15th century ? (Oxford, MHS) |
Equinoctial Dial, Unsigned, English, Late 15th century ? (London, BM) |
Equinoctial Dial, Unsigned, French, Late 16th century ? (London, BM) |
Equinoctial Dial, Unsigned, French, circa 1500 (Oxford, MHS) |
Equinoctial Dial, Unsigned, Spanish, 15th century (Oxford, MHS) |
Equinoctial Dial, Unsigned, German, Dated 1584 (Oxford, MHS) |
Folding Rule, Unsigned, English, Later 16th century (Firenze, IMSS) |
Folding Rule, Unsigned, English, Later 16th century (Firenze, IMSS) |
Geometrical Square, Unsigned, Italian, 16th century (Firenze, IMSS) |
Globe Dial, Unsigned, German, 16th century (Oxford, MHS) |
Gunner's Caliper, Unsigned, Dutch, circa 1600 (Leiden, Boerhaave) |
Gunner's Compendium, Unsigned, German, Dated 1595 (Oxford, MHS) |
Gunner's Compendium, Unsigned, German, Later 16th century (Oxford, MHS) |
Gunner's Gauge Scales, Unsigned, Italian, 16th century (Firenze, IMSS) |
Gunner's Level, Unsigned, German, Dated 1573 (London, BM) |
Gunner's Sight And Level, Unsigned, origin unknown, 16th century (Firenze, IMSS) |
Gunner's Sight And Level, Unsigned, Augsburg, Late 16th century ? (London, BM) |
Gunner's Sight And Level, Unsigned, Nuremberg, circa 1600 (Oxford, MHS) |
Gunner's Sight And Level, Unsigned, German, 16th century (Firenze, IMSS) |
Gunnery Instrument, Unsigned, German, circa 1600 (Oxford, MHS) |
Horizontal Dial, Unsigned, Nuremberg, circa 1600 ? (London, BM) |
Horizontal Dial, Unsigned, origin unknown, circa 1500 ? (Oxford, MHS) |
Horizontal Dial, Unsigned, German, Later 16th century (Oxford, MHS) |
Horizontal Dial, Unsigned, German, circa 1600 (Oxford, MHS) |
Horizontal Dial, Unsigned, German, Late 16th century ? (London, BM) |
Horizontal Dial, Unsigned, German, 16th century (Oxford, MHS) |
Horizontal Dial, Unsigned, Austrian, Dated 1453 (London, BM) |
Horizontal Dial, Unsigned, German, 16th century (Firenze, IMSS) |
Horizontal Dial, Unsigned, English, circa 1500 (Oxford, MHS) |
Horizontal Dial, Unsigned, Dutch, Late 16th century ? (London, BM) |
Horizontal Dial, Unsigned, Italian, Later 16th century (Oxford, MHS) |
Level, Unsigned, Italian, 16th century (Firenze, IMSS) |
Mariner's Astrolabe, Unsigned, Spanish, Later 16th century (Oxford, MHS) |
Measuring Rod, Unsigned, origin unknown, 15th century (London, BM) |
Measuring Rod, Unsigned, German, Late 16th century ? (London, BM) |
Measuring Rod, Unsigned, German, circa 1600 (London, BM) |
Mining Instruments, Unsigned, German, 16th century (Firenze, IMSS) |
Mining Instruments, Unsigned, German, Later 16th century (Oxford, MHS) |
Mining Instruments, Unsigned, German, Later 16th century (Oxford, MHS) |
Mining Instruments, Unsigned, German, 16th century (Firenze, IMSS) |
Navicula Dial, Unsigned, origin unknown, 15th century ? (Oxford, MHS) |
Navicula Dial, Unsigned, English, 15th century (Firenze, IMSS) |
Nocturnal, Unsigned, French, Late 16th century ? (London, BM) |
Nocturnal, Unsigned, English, 16th century (Firenze, IMSS) |
Nocturnal, Unsigned, Italian, circa 1560 (Oxford, MHS) |
Nocturnal, Unsigned, French, Dated 1588 (London, BM) |
Nocturnal, Unsigned, German, 16th century ? (Oxford, MHS) |
Nocturnal And Quadrant, Unsigned, French, Dated 1543 (Oxford, MHS) |
Nocturnal And Sundial, Unsigned, French, circa 1600 (Oxford, MHS) |
Nocturnal And Sundial, Unsigned, French, Dated 1554 (Firenze, IMSS) |
Nocturnal And Sundial, Unsigned, Rome, Dated 1578 (Oxford, MHS) |
Nocturnal And Sundial, Unsigned, French, Dated 1560 (Firenze, IMSS) |
Nocturnal And Sundial, Unsigned, French, circa 1600 ? (Oxford, MHS) |
Pendant Sundial, Unsigned, English, Medieval (Oxford, MHS) |
Polyhedral Dial, Unsigned, German, Late 16th century (London, BM) |
Polyhedral Dial, Unsigned, German, Late 16th century (Oxford, MHS) |
Polyhedral Dial, Unsigned, German, 16th century (Firenze, IMSS) |
Polyhedral Dial, Unsigned, origin unknown, Date unknown (Oxford, MHS) |
Polyhedral Dial, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Protractor, Unsigned, English, Late 16th century (Firenze, IMSS) |
Protractor, Unsigned, Italian, 16th century (Firenze, IMSS) |
Quadrant, Unsigned, German, 14th century (Firenze, IMSS) |
Quadrant, Unsigned, Italian, circa 1600 ? (London, BM) |
Quadrant, Unsigned, origin unknown, Date; place Undated (London, BM) |
Quadrant, Unsigned, Italian, 15th century ? (London, BM) |
Quadrant, Unsigned, English, Dated to 1400 (London, BM) |
Quadrant, Unsigned, origin unknown, Late 15th century ? (Oxford, MHS) |
Quadrant, Unsigned, English, 14th century (London, BM) |
Quadrant, Unsigned, French, Dated 1567 (Oxford, MHS) |
Quadrant, Unsigned, French, circa 1300 (Oxford, MHS) |
Quadrant, Unsigned, English, Dated 1399 (London, BM) |
Quadrant, Unsigned, English, circa 1400 (Oxford, MHS) |
Quadrant, Unsigned, German, Mid 16th century ? (London, BM) |
Radio Latino, Unsigned, Italian, Later 16th century (Firenze, IMSS) |
Ramming Rods, Unsigned, English, 16th century (Firenze, IMSS) |
Reduction Compass, Unsigned, Italian, circa 1600 (Oxford, MHS) |
Ring Dial, Unsigned, German, 16th century (London, BM) |
Ring Dial, Unsigned, German, circa 1480 ? (Oxford, MHS) |
Scaphe Dial, Unsigned, Italian, 16th century (Firenze, IMSS) |
Sun And Moon Dial, Unsigned, German, circa 1580 (London, BM) |
Sundial, Unsigned, German, 16th century (Oxford, MHS) |
Surveying Instrument, Unsigned, German, 16th century (Firenze, IMSS) |
Surveying Instrument, Unsigned, Italian, 16th century (Firenze, IMSS) |
Surveying Rod, Unsigned, English, 16th century (Firenze, IMSS) |
Surveying Staff, Unsigned, German, 16th century (Firenze, IMSS) |
Surveying Staff, Unsigned, German, 16th century (Firenze, IMSS) |
Surveyor's Line, Unsigned, German, 16th century (Firenze, IMSS) |
Theodolite, Unsigned, English, Later 16th century (Firenze, IMSS) |
Theodolite, Unsigned, Italian, Late 16th century (London, BM) |
Theodolite, Unsigned, Dutch, Dated 1565 (Oxford, MHS) |
Theodolite, Unsigned, Italian, 16th century (Firenze, IMSS) |
Tripod Base, Unsigned, German, 16th century (Firenze, IMSS) |
Tripod Legs, Unsigned, German, 16th century (Firenze, IMSS) |
Tripod Legs, Unsigned, German, 16th century (Firenze, IMSS) |
Vertical Dial, Unsigned, German, Dated 1593 (London, BM) |
Vertical Dial, Unsigned, Florence, Later 16th century (Firenze, IMSS) |
Vertical Dial, Unsigned, German, 16th century (Firenze, IMSS) |
Vertical Disc Dial, Unsigned, Spanish, Late 16th century (London, BM) |
Vertical Disc Dial, Unsigned, German, 1550 or 1574 (Oxford, MHS) |
Vertical Disc Dial, Unsigned, German, Date; place Undated (Oxford, MHS) |
Vertical Disc Dial, Unsigned, German, Dated 1564 (Oxford, MHS) |
Vertical Disc Dial, Unsigned, German, circa 1570 (Oxford, MHS) |
Wind Vane, Unsigned, German, circa 1590 (London, BM) |
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